首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 140 毫秒
1.
This study presents a comparison between how six teachers and their 17‐year‐old students talked about texts in civics and nursing science during regular lessons and during two lessons where structured text talk in smaller groups was used. The majority of students were poor readers and attended vocational programmes. The text talks were videotaped. During the regular lessons, most of the teachers asked purely factual questions where the students just had to retrieve information from the text to be able to answer them. The students made few inferences and reflections. After the regular lessons, the teachers were invited to participate in seminars led by the investigator. In these seminars, a special model of structured text talk was practiced before videotaping a second and a third time. The results demonstrate that during the structured text talks the teachers' question types had undergone a change. The number of purely factual questions had decreased. Instead there was an increase in the number of inferences and half‐open questions. The students read more actively during the structured text talks. They clearly made an effort to explore ideas in the text and made numerous inferences and reflections.  相似文献   

2.
There is a growing interest in using classroom response systems or clickers in science classrooms at both the university and K-12 levels. Typically, when instructors use this technology, students are asked to answer and discuss clicker questions with their peers. The existing literature on using clickers at the K-12 level has largely focused on the efficacy of clicker implementation, with few studies investigating collaboration and discourse among students. To expand on this work, we investigated the question: Does clicker use promote productive peer discussion among middle school science students? Specifically, we collected data from middle school students in a physical science course. Students were asked to answer a clicker question individually, discuss the question with their peers, answer the same question again, and then subsequently answer a new matched-pair question individually. We audio recorded the peer conversations to characterize the nature of the student discourse. To analyze these conversations, we used a grounded analysis approach and drew on literature about collaborative knowledge co-construction. The analysis of the conversations revealed that middle school students talked about science content and collaboratively discussed ideas. Furthermore, the majority of conversations, both ones that positively and negatively impacted student performance, contained evidence of collaborative knowledge co-construction.  相似文献   

3.
This paper reports on an attempt to investigate Turkish primary school students’ interest in science by using their self-generated questions. We investigated students’ interest in science by analyzing 1704 self-generated science-related questions. Among them, 826 questions were submitted to a popular science magazine called Science and Children. Such a self-selected sample may represent a group of students who have a higher level of motivation to seek sources of information outside their formal education and have more access to resources than the students of low social classes. To overcome this problem, 739 students were asked to write a question that they wanted to learn from a scientist and as a result 878 questions were gathered. Those students were selected from 13 different schools at 9 cities in Turkey. These schools were selected to represent a mixture of socioeconomic areas and also to cover different students’ profile. Students’ questions were classified into two main categories: the field of interest and the cognitive level of the question. The results point to the popularity of biology, astrophysics, nature of scientific inquiry, technology and physics over other science areas, as well as indicating a difference in interest according to gender, grade level and the setting in which the questions were asked. However, our study suggests that only considering questions submitted to informal learning environments, such as popular science magazines or Ask-A-Scientist Internet sites has limitations and deficiencies. Other methodologies of data collection also need to be considered in designing teaching and school science curriculum to meet students’ needs and interest. The findings from our study tend to challenge existing thinking from other studies. Our results show that self-generated questions asked in an informal and a formal setting have different patterns. Some aspects of students’ self-generated questions and their implications for policy, science curriculum reform and teaching are discussed in this paper.  相似文献   

4.
Building on the multidimensional framework of epistemic cognition proposed by Greene et al. (Educational Psychologist 43:142–160, 2008), this study examined beliefs about justification of knowledge claims in science among 65 Norwegian 10th graders. The first research question asked whether beliefs in personal justification, justification by authority, and justification by multiple sources differed in strength among the participants. It was found that the students most strongly believed in justification by authority, followed by justification by multiple sources and personal justification. The second research question asked whether the three types of justification beliefs differentially and uniquely predicted the comprehension of multiple conflicting documents on a science issue. In a multiple regression analysis with multiple-documents comprehension indicated by essay performance as the dependent variable, both personal justification and justification by multiple sources emerged as unique predictors when topic knowledge was controlled for. Specifically, beliefs in personal opinion as a means of justifying knowledge claims in science was negatively related to multiple-documents comprehension, whereas beliefs in justification through corroboration across multiple sources of information were positively related to multiple-documents comprehension. This study provides new evidence about relationships between epistemic beliefs and new literacy competencies needed in an information society, such as integrating across multiple conflicting sources of information; relationships that may also have practical implications.  相似文献   

5.
This study used qualitative content analysis to examine anonymous questions about sex and sexuality submitted by Latino and African American adolescents in Los Angeles, California, classrooms. The majority of questions asked about sexuality and sexual behavior, or anatomy and physiology, with fewer questions about pregnancy and pregnancy prevention, sexually transmitted infections, and condoms. Overall, a notable mix was found of questions implying exposure to or awareness of a wide range of sexual activities, together with questions demonstrating fundamental misunderstandings or confusion about some of the most basic aspects of sex and sexuality. Gender differences emerged across topics, subtopics, and question types. The results of this study suggest that differences exist between what Latino and African-American teens yearn to know about sex and sexuality, and what information they are getting on these topics from other sources. This reinforces the importance of considering the concerns and needs of the intended audience in designing and evaluating health education programs.  相似文献   

6.
This research investigated whether features of examination questions influence students with dyslexia differently to others, potentially affecting whether they have a fair opportunity to show their knowledge, understanding and skills. A number of science examination questions were chosen. For some questions two slightly different versions were created. A total of 54 students considered by their teachers to have dyslexia and a matched control group of 51 students took the test under exam conditions. A dyslexia screening assessment was administered where possible and some students were interviewed. Facility values and Rasch analysis were used to compare performance between the versions of the same question and between those with and without dyslexia. Chi‐square statistics found no statistically significant differences in performance between groups or between question versions. However, some tentative implications for good practice can be inferred (e.g. avoiding ambiguous pronouns, using bullet points).  相似文献   

7.

This study describes the trends in students' explanations of biological change in organisms. A total of 96 student volunteers (8 students from each of 2nd, 5th, 8th, and 12th grades from 3 localities) were interviewed individually and each student was presented a series of graphics depicting natural phenomena. Students' explanations to questions of how something occurred were assigned to one of three categories (responses addressing how something occurred, why something occurred, and 'I don't know'). While the number of responses in each category was roughly equivalent in prominence across grade levels, the majority of students were unable to offer a causal explanation of how a phenomena occurred. An unexpected phenomenon was the students' predilection to redirect the interview question so they could answer them. If asked a how question, as they were in every interview instance, 32% the students answered with a 'why' response. The way biology is taught, the structure of biology or/and how we learn it could shed some light into this phenomenon and has implications for science educators.  相似文献   

8.
One challenge in science education assessment is that students often focus on surface features of questions rather than the underlying scientific principles. We investigated how student written responses to constructed-response questions about photosynthesis vary based on two surface features of the question: the species of plant and the order of two question prompts. We asked four versions of the question with different combinations of the two plant species and order of prompts in an introductory cell biology course. We found that there was not a significant difference in the content of student responses to versions of the question stem with different species or order of prompts, using both computerized lexical analysis and expert scoring. We conducted 20 face-to-face interviews with students to further probe the effects of question wording on student responses. During the interviews, we found that students thought that the plant species was neither relevant nor confusing when answering the question. Students identified the prompts as both relevant and confusing. However, this confusion was not specific to a single version.  相似文献   

9.
The use of personal response systems, or clickers, is increasingly common in college classrooms. Although clickers can increase student engagement and discussion, their benefits also can be overstated. A common practice is to ask the class a question, display the responses, allow the students to discuss the question, and then collect the responses a second time. In an introductory biology course, we asked whether showing students the class responses to a question biased their second response. Some sections of the course displayed a bar graph of the student responses and others served as a control group in which discussion occurred without seeing the most common answer chosen by the class. If students saw the bar graph, they were 30% more likely to switch from a less common to the most common response. This trend was more pronounced in true/false questions (38%) than multiple-choice questions (28%). These results suggest that observing the most common response can bias a student''s second vote on a question and may be misinterpreted as an increase in performance due to student discussion alone.  相似文献   

10.
  相似文献   

11.
In science education, laboratory practicals are frequently assessed through submission of a report. A large increase in student numbers necessitated us adapting a traditional practical report into an online test with automated marking. The assessment was designed to retain positive features of the traditional laboratory report but with added pedagogic and administrative benefits made possible through the online medium. After performing their experiments, students were given idealised data, enabling immediate comparison with their own results, and asked to perform a series of calculations based on that ideal data. The two‐part test asked questions about the students' calculations. Part I was formative, ensuring that the students had mastered basic concepts before advanced concepts were tested in Part II. The test rewarded correct methodology and understanding as well as the right answers and gave absolute consistency to the marking scheme. Students could submit at their convenience and received instant feedback. The assessment was met with emphatically positive feedback from students. In addition, it was possible to track submissions by students, providing insights into their behaviour. Students appeared to group into three submission styles—early submitters, considered submitters and last minute submitters—information which can be useful to guide pedagogic practice. In the latest iteration, analysis of submission behaviour gave us confidence to reduce the time before the submission deadline, which resulted in a substantial increase in student attainment.  相似文献   

12.
This study explores how student-generated questions can support argumentation in science. Students were asked to discuss which of two graphs showing the change in temperature with time when ice is heated to steam was correct. Four classes of students, aged 12–14 years, from two countries, first wrote questions about the phenomenon. Then, working in groups with members who differed in their views, they discussed possible answers. To help them structure their arguments, students were given a sheet with prompts to guide their thinking and another sheet on which to represent their argument diagrammatically. One group of students from each class was audiotaped. Data from both students' written work and the taped oral discourse were then analyzed for types of questions asked, the content and function of their talk, and the quality of arguments elicited. To illustrate the dynamic interaction between students' questions and the evolution of their arguments, the discourse of one group is presented as a case study and comparative analyses made with the discourse from the other three groups. Emerging from our analysis is a tentative explanatory model of how different forms of interaction and, in particular, questioning are needed for productive argumentation to occur.  相似文献   

13.
Abstract: A modified problem‐based learning (PBL) exercise was implemented in a food science Dairy Products course, which had previously been taught in the traditional lecture and laboratory format only. The first 10 wk of the course consisted of weekly lectures and laboratory exercises. During the remaining 3 wk, students were presented with a case study that described milk quality problems that could be encountered by the dairy industry. Each week, students received a set of case disclosures containing relevant information that assisted in solving the case. Students were asked to present their findings at the end of the course in the form of a written “consultant's report.” In addition, students were given a survey asking for feedback on the PBL exercise, and the usefulness of having the lectures and labs prior to the PBL experience. Eighty percent of the students found that lectures and labs provided them with sufficient background knowledge to understand and solve the PBL case, 70% found that the PBL reinforced course material covered during lecture and labs, 50% responded that PBL helped them develop new ways of reasoning about the subject matter and 65% reported that PBL taught them to think critically. Of the total students surveyed, 56% would prefer to participate in similar types of PBL exercises in the future. Incorporating PBL into traditionally taught food science courses can have a positive influence on the learning process.  相似文献   

14.
This study investigated the potential of students' written and oral questions both as an epistemic probe and heuristic for initiating collaborative argumentation in science. Four classes of students, aged 12–14 years from two countries, were asked to discuss which of two graphs best represented the change in temperature as ice was heated to steam. The discussion was initiated by asking questions about the phenomenon. Working in groups (with members who had differing viewpoints) and guided by a set of question prompts, an argument sheet, and an argument diagram, students discussed contrasting arguments. One group of students from each class was audiotaped. The number of questions written, the concepts addressed, and the quality of written arguments were then scored. A positive correlation between these factors was found. Discourse analysis showed that the initial focus on questions prompted students to articulate their puzzlement; make explicit their claims and (mis)conceptions; identify and relate relevant key concepts; construct explanations; and consider alternative propositions when their ideas were challenged. Productive argumentation was characterized by students' questions which focused on key ideas of inquiry, a variety of scientific concepts, and which made explicit reference to the structural components of an argument. These findings suggest that supporting students in productive discourse is aided by scaffolding student questioning, teaching the criteria for a good argument, and providing a structure that helps them to organize and verbalize their arguments. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:883–908, 2010  相似文献   

15.
  相似文献   

16.
Astrobiology is, on a profound level, about whether life exists outside of the planet Earth. The question of existence of life elsewhere in the universe has been of interest to many societies throughout history. Recently, the research area of astrobiology has grown at a fast rate, mainly due to the development of observational methods, and the media is frequently reporting on new research findings. International surveys show that astrobiology questions are among those that interest young people the most. The popularity of astrobiology and the way it captures much science content makes it an interesting area for science teaching. However, there is very little research directly focused upon students’ views in astrobiology. The study reported in this paper draws from the answers of 186 Swedish lower secondary students (16 years old) to a questionnaire, with closed and open-ended questions regarding their views of issues in astrobiology. The study was guided by the worldview theory (Cobern 1991; Cobern, Science Education 80(5):579–610, 1996; Cobern, Science and Education 9:219–246, 2000). The results show that even though basic reasoning in astrobiology is known by a majority of the students, there is a considerable number of students, for whom this is not the case. Furthermore, it was found that for all questions, there are students answering in different ways when asked to describe their own view and the view they associate with science researchers. The implications of the study for further research and for the teaching of astrobiology in science class are discussed.  相似文献   

17.
  相似文献   

18.
This article relays results of a study focused on questions invoked to correct declarative knowledge deficits while readers process science texts explaining natural phenomena. Firstly, the authors focused on finding out what kind of questions are asked by students who read these texts and, secondly how task demand influences quantity and quality of formulated questions. Two hundred and eighty nine Portuguese students from 8th, 10th, and 12th grade participated in the study. The students were instructed to ask questions on two short science paragraphs that explained natural phenomena. Three task conditions were chosen. Thus, in the “Class” condition, the task was introduced as an activity aimed at developing the capacity to ask questions. In the “Examination” condition, the task was presented as a test on question generation. Finally, in the “Extra‐academic” condition the questioning task was camouflaged as a participation in a research project sponsored by the Ministry of Education and geared at the improvement of science textbooks. The results have shown that students are able to ask many questions when given an opportunity to do so. The study has also proven that students are capable of generating a large volume of causal‐antecedent questions relative to this kind of texts. Finally, no clear effects were found between grade level and/or task demand as defined in the conducted study. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 602–614, 2000  相似文献   

19.
This study examines question asking about causal relations when students read scientific texts. We examine the influence of the length of causal chains and the knowledge of readers. Students from grades 8 and 12 read two short paragraphs that described natural phenomena. Length of the causal chain linking cause and effect in two key sentences was manipulated. The students were instructed to ask on anything that they did not understand. The results showed, in the first place, that students ask a majority of causal antecedent questions. Second, a longer causal chain resulted in less causal questions asked by the 12th grade students, but did not reduce the number of causal questions asked by 8th grade students. Third, there was no relation between comprehensibility ratings given to the causal relations and causal question asking. According to this, an explicit comprehensibility score that taps on the metacognitive awareness of students may not be a good indicator of the level of understanding.  相似文献   

20.
  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号